As part of checking some prereqs for an idea (IOS app with MBtiles on local storage enabeling offline maps) I'd like to know if it's useful to gzip MBtiles when transporting them to an IOS device.
In other words, is there a useful reduction in size when gzipping MBtiles? (or is the MBtile-format, already packed in some way, thus limiting the use of gzip or other packers). If so, how much size reduction can I expect? (percentage ballpark)
NOTE: crosspost from SO (as it's within both domains) http://stackoverflow.com/questions/13864691/what-size-reduction-can-i-expect-on-average-when-gzipping-mbtiles